Breaking News: Grepper is joining You.com. Read the official announcement!

c++ program to find prime number using function

Add Answer

Scorpion king answered on November 9, 2021 Popularity 9/10 Helpfulness 5/10

answer c++ program to find prime number using function

related prime number in c++

related find prime number c++

related prime numbers program c++

related prime number program c++

related C++ prime number

related prime number c++ program

c++ program to find prime number using function

Comment

#include<iostream>
using namespace std;
bool isPrimrNumber(int number){
	bool isPrimeFlag=true;
	for(int i=2;i<number;i++){
	if(number%i==0){
		isPrimeFlag=false;
		break;
	}
}
		return isPrimeFlag;
}
int main()
{
	int number;
	cout<<"Please enter your number";
	cin>>number;
		bool isPrimeFlag=isPrimeNumber(number)
	if(isPrimeFlag)
	{
		cout<<"prime Number";
	}
	else
	{
		cout<<"not prime number";
	}
}

Popularity 9/10 Helpfulness 5/10 Language cpp

Source: Grepper

Tags: c++ find function using

Link to this answer
Share Copy Link

Contributed on Feb 01 2022

Scorpion king

0 Answers Avg Quality 2/10

Closely Related Answers

prime number in c++

Comment

#include<iostream>
using namespace std;
 
int main()
{
	int n;
	bool c=1;
	cin >> n;
	if (n <= 1)
	{
		cout << "NO\n";
	}
	else
	{
		for (int i = 2; i < n; i++)
		{
			if (n % i == 0)
			{
				c=0;
				break;
			}
		}
		if (!c)
			cout << "NO\n";
		else
			cout << "YES\n";
	}
	return 0;
}

Popularity 9/10 Helpfulness 6/10 Language cpp

Source: codejudge.blogspot.com

Tags: c++

Link to this answer
Share Copy Link

Contributed on Feb 20 2022

coder

0 Answers Avg Quality 2/10

find prime number c++

Comment

#include <math.h>
// time: O(sqrt(n)) ..  space: O(1)
bool isPrime(int n) {
  if (n < 2) return false;
  int iter = 2;
  while(iter <= sqrt(n)) {
  	if (n % iter == 0) return false;
    iter++;
  }
  return true;
}

Popularity 9/10 Helpfulness 4/10 Language cpp

Source: Grepper

Tags: c++

Link to this answer
Share Copy Link

Contributed on Nov 09 2021

Enchanting Echidna

0 Answers Avg Quality 2/10

prime numbers program c++

Comment

#include <iostream>
using namespace std;
int main()
{
    int n, i;
    cout << "Enter any number :";
    cin >> n;
    if (n % 2 != 0 && n % n == 0 && n % 1 == 0)
    {
        cout << "prime number";
    }
    else
    {
        cout << "not prime";
    }

    return 0;
}

Popularity 7/10 Helpfulness 4/10 Language cpp

Source: Grepper

Tags: c++ numbers

Link to this answer
Share Copy Link

Contributed on Dec 07 2022

Leo Fras

0 Answers Avg Quality 2/10

prime number program c++

Comment

#include<iostream>
#include<cmath>
using namespace std;
int main(){
    int n;
    cin>>n;
    for(int i=2;i<sqrt(n)+1;i++){
        if(n%i==0){
            cout<<"number is not a prime";
            return 0;
        }
    }
    cout<<"number is a prime";
    return 0;
}

Popularity 9/10 Helpfulness 3/10 Language cpp

Source: Grepper

Tags: c++

Link to this answer
Share Copy Link

Contributed on May 10 2022

Gifted Gerbil

0 Answers Avg Quality 2/10

C++ prime number

Comment

// A optimized school method based C++ program to check
// if a number is prime
#include <bits/stdc++.h>
using namespace std;
  
bool isPrime(int n)
{
    // Corner cases
    if (n <= 1)
        return false;
    if (n <= 3)
        return true;
  
    // This is checked so that we can skip
    // middle five numbers in below loop
    if (n % 2 == 0 || n % 3 == 0)
        return false;
  
    for (int i = 5; i * i <= n; i = i + 6)
        if (n % i == 0 || n % (i + 2) == 0)
            return false;
  
    return true;
}
  
// Driver Program to test above function
int main()
{
    isPrime(11) ? cout << " true\n" : cout << " false\n";
    isPrime(15) ? cout << " true\n" : cout << " false\n";
    return 0;
}

Popularity 8/10 Helpfulness 3/10 Language cpp

Source: www.geeksforgeeks.org

Tags: c++

Link to this answer
Share Copy Link

Contributed on Apr 25 2022

Soumyaratna Debnath

0 Answers Avg Quality 2/10

prime number c++ program

Comment

#include <iostream>
using namespace std;

int main() {

  int i, n;
  bool is_prime = true;

  cout << "Enter a positive integer: ";
  cin >> n;

  // 0 and 1 are not prime numbers
  if (n == 0 || n == 1) {
    is_prime = false;
  }

  // loop to check if n is prime
  for (i = 2; i <= n/2; ++i) {
    if (n % i == 0) {
      is_prime = false;
      break;
    }
  }

  if (is_prime)
    cout << n << " is a prime number";
  else
    cout << n << " is not a prime number";

  return 0;
}

Popularity 6/10 Helpfulness 1/10 Language cpp

Source: www.programiz.com

Tags: c++

Link to this answer
Share Copy Link

Contributed on Mar 24 2023

Sehrish Zarin

0 Answers Avg Quality 2/10

c++ program to find prime number using function

Contents

More Related Answers

c++ program to find prime number using function

Closely Related Answers

prime number in c++

find prime number c++

prime numbers program c++

prime number program c++

C++ prime number

prime number c++ program

Grepper

Documentation

Social

Legal

Contact

Oops, You will need to install Grepper and log-in to perform this action.